Home / 20,395.36-28,141.32-13,332.16

Finding the Fourth Proportional to 20,395.36, 28,141.32 and 13,332.16

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Solution

The fourth proportional to 20,395.36, 28,141.32 and 13,332.16 is: 18,395.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.36 : 28,141.32 = 13,332.16 : x
  2. Step 2: Convert to fraction form
    20,395.36/28,141.32 = 13,332.16/x
  3. Step 3: Cross multiply
    20,395.36x = 28,141.32 × 13,332.16
  4. Step 4: Simplify right side
    20,395.36x = 375,184,580.85
  5. Step 5: Solve for x
    x = 375,184,580.85/20,395.36
  6. Step 6: Final answer
    x = 18,395.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.